catharsis
commented
8 years ago This is not something we can (sanely) do anything about. It stems from a change in Perl [1], which causes a warning to be triggered in /usr/bin/automake. In other word, the problem is in automake and the bug has already been reported in [2], so I'm closing this.
[1] https://metacpan.org/pod/release/PCM/perl-5.21.3/pod/perl5211delta.pod#A-literal-should-now-be-escaped-in-a-pattern [2] http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21001
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /usr/bin/automake line 3936.This doesn't seem to have any immediate effect, but I'd like to get rid of it nonetheless.